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. 2020 Mar 5;30(3):128-135.
doi: 10.2188/jea.JE20180223. Epub 2019 Mar 16.

Plain Water Intake and Association With the Risk of Overweight in the Chinese Adult Population: China Health and Nutrition Survey 2006-2011

Xing-Bing Pan  1 , Hui-Jun Wang  2 , Bing Zhang  2 , Ying-Li Liu  1 , Su-Fen Qi  1 , Qing-Bao Tian  1
Affiliations

Plain Water Intake and Association With the Risk of Overweight in the Chinese Adult Population: China Health and Nutrition Survey 2006-2011

Xing-Bing Pan et al. J Epidemiol. .

Abstract

Background: The prevalence of overweight is increasing dramatically worldwide. The aim of our study was to investigate the association of plain water intake (PWI) with the risk of new-onset overweight risk among Chinese adults.

Methods: A total of 3,200 adults aged 18-65 who were free of overweight at baseline were enrolled from China Health and Nutrition Survey (CHNS) cohort study in 2006-2011. The risk of new-onset overweight with different amounts of PWI per day was analyzed in this 5-year cohort. A multiple logistic regression model was used to assess the association of PWI and the risk of new-onset overweight and adjust for potential confounders. Moreover, dose-response models were developed to estimate the linear relationship.

Results: During 5 years of follow-up, 1,018 incident cases were identified. Our analysis indicated an inverse association of more than 4 cups of PWI per day and the risk of new-onset overweight among normal weight individuals. Compared with participants who drank 2 to 3 cups PWI, the adjusted odds ratios (OR) of overweight were 0.741 (95% confidence interval [CI], 0.599-0.916) in participants who drank 4 to 5 cups PWI, and 0.547 (95% CI, 0.435-0.687) in participants who drank more than 6 cups PWI. The dose-response analysis showed that every cup of PWI was associated with a 6.5% and 8.4% decrease in the risk of new-onset overweight among men and women, respectively. The interactions of PWI and covariates on the risk of overweight were not found.

Conclusion: Drinking more than 4 cups (≈1 liter) per day of plain water is associated with decrease in the risk of new-onset overweight among normal-weight individuals.

Keywords: CHNS; dose–response; obesity; overweight; plain water.

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Figures

Figure 1.
Figure 1.. Flow chart illustrating the sample selection for the present study.
Figure 2.
Figure 2.. Dose-response relationship of plain water intake and the risk of overweight among men (A) and women (B). Log-linear dose-response model was present by odds (OR: - - - - -). Odds ratios (OR: ——) and corresponding 95% CI (— —) were summarized for the non-linear dose-response model relationship between plain water intake and risk of overweight.
Figure 3.
Figure 3.. The odds ratios and corresponding 95% confidence interval for new-onset overweight risk for consumption of PWI (A) and PWTI (B).
See this image and copyright information in PMC

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